tree(Object)"(Object key)(String)"
Relative path from parent directory. Parent of tree is process.cwd()."branch"(Array|String)"
Create directories with the same status included in the object that belongs."chmod(Number|String)"default: 777 //TODO
Set directory mode. String representation (e.g. "rw-rw-rw-" as 666) can be given."clean(Boolean)"default: false | options.clean
Crean up ( use rimraf ) directory contents and itself, create new.